Feeding molten glass



Oct. 20, 1931. G. c. MARSH 1,828,229

FEEDING MOLTEN GLASS Filed July 1a, 1928 2 Sheets-Sheet 1 lNV ENTOR We WATTORNE;

@ch 20, 1931 G. c. MARSH" 1,828,229

FEEDING MOLTEN GLASS Filed July 18, 1928 2 Sheets-Sheet 2 INVENTQRPatented on. 20, 1931 PATENT OFFICE G'ILBERT C. MARSH, 0F AKRON, OHIQ,ASSIGNOB T0 HARTFORD-EMPIRE COMPANY, 0]?

HAIBI'LFORD, GQNNECTICUT, A CORPORATION OF DELAWARE FEEDING MOLTEN GLASSApplication filed July 18, 1928.

My invention relates to the feeding of glass from a molten body ofglass, and is partly directed to eliminating shear marks and the likefrom the gobs as they are cut and fed down into a machine for formingglass articles. My invention is also of especial importance in themanufactured multi-colored glass balls or marbles in which it assists ingiving the balls or marbles the desired striping from the diiierentcolors of lass of which the glass being fed iscompose My'invention alsocomprises various features which I for carrying shall hereinafterdescribe and claim.

in the accompanying drawings, Fig. l is an elevation, partly in section,of apparatus out my invention; Fig. 2 is a front elevat1on thereof withthe receptacle in supporting position; and Fig. 3 is similar to Fig. 2,with the rcceptacle in non supporting position.

I have shown in the drawings a typical way of carrying out my invention.The molten lass in which lass of two or more colors has 1 3 previouslybeen combined, is flowed out of a boot or spout 2 of a furnace throughan orifice 3 of the usual character, in which the flow of glass iscontrolledby a plunger 4,

which may be stationary, or reciprocated or rotated, as desired. Afterthe glass flowing down through the orifice has been cut by the usualshears 5, 1 provide a means 6 for en portin and elevating the stub end 7of t e glass a ove the shears, which tends to eliminate the shear markleft by the action of the shears 5 on the stub 7.

The means 6 for supporting the glass preferably consists in a refractorycu -shaped receptacle which may be elevated rom the one side and beneaththe shears 5 as the shears open, and passed, as by a suitable reciprocating means such as the driven cam ti, upwardly between the open shears toengage and sup-- port the bottom of the stub 7,. and thus cause the stubend to assume the she e of the receptacle 6. This shaping is pre erablyaccelerated by the elevation of the stub by the receptacle, whichassists in obliterating the shear mark from the stub end.

As the glass is thus supported by the receptacle 6 I prefer to give it arotary or twist- Serial No. 298,679.

ing motion, which tends to rotate the stub 7 r and thereby give thedesired striping efiect to the diiierent colors of glass which arecontained in the gob being formed from the stub end. The rotation of thestub is assisted by slight projections 6 on the interior of the cupwhich give a positive engagement with the stub.

This rotary or twisting movement may be effected by driving the shaft 8,on which the receptacle 6 is mounted, by means of the gears 9 and 10,the belt 11 and the variable speed pulleys 12.

While the supportin and twisting action of the receptacle is o lymomentary, as the shears normally operate at about thirty closures perminute, it is suficient to change the form of the stub or bottom of thesucceeding chargeor gob and to draw the added color or colors into welldefined bands or' stripes. The cup is then withdrawn down between theshears, the gob drops down through and is out by the shears and fallsinto the funnel 13 and thence into the forming machine 14.

I have found that my invention is of great advantage not only in theelimination of shear marks and in striping parti-colored glass, but alsoin giving a variety of striping to the marbles and glass balls, which isso desired in the commercial product. The use of a variable speed motorfor causing the rotation of the receptacle is also of advantage, sinceit assists in getting this variable striped efiect, which is alsoassisted by the amount of lift given to the stub end of the glass by therecep acle.

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. Elf-l mass of discharg which comprises causin discharge of glass froma source of supply through a downwardly openin discharge outlet to forma charge mass in ree suspension from said outlet, applying anundersupport tem orarily to said suspended charge mass an twisting saidmass while thus supported, removing the undersupport from all thetwisted glass below said discharge outlet to permit such glass to sagdownwardly in response to the action 0' gravity, and severing a chargefrom the glass below said discharge outlet when a portion thereofsufllcient for the charge desired has passed. downwardly below the planeof severance.

2. Glass feeding apparatus comprising a container having a downwardlyopening dis charge outlet through which molten glass may issue in asuspended n ass, means for temporarily engaging glass of said suspendedmass and for twisting said. 7- spect to glass in said outlet, drawingsaid glass aging gageinent with all charged glass below and means for s"means to an orifice, sl the form oi go :iprocating ti to the shears: tosupport the t successive eh above the shearing tating the rs charges torota glass from said issued glass.

7. Glass feeding apparatus com rising a container having a discharge outat in its base, a cup mounted to swing periodicall from an out of theway position to position to engage the lower end portion of glassissuing rom said outlet, means for moving said cup periodically to andfrom its glass engaging position, and means for rotating said cupsubstantially about its axis when it is in its glass on. aging position.

8. Glass feeding apparatus rising a container having a n charge outiietin its base, a cup mounted to L i periodically from an out of the way non position. to engage the lower d: i i n o l... suing from sa'il saidcup pe engaging cup snhctsnti lass an

